Home / 812,992.06-1,219,048.26-645,589.36

Finding the Fourth Proportional to 812,992.06, 1,219,048.26 and 645,589.36

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Solution

The fourth proportional to 812,992.06, 1,219,048.26 and 645,589.36 is: 968,034.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,992.06 : 1,219,048.26 = 645,589.36 : x
  2. Step 2: Convert to fraction form
    812,992.06/1,219,048.26 = 645,589.36/x
  3. Step 3: Cross multiply
    812,992.06x = 1,219,048.26 × 645,589.36
  4. Step 4: Simplify right side
    812,992.06x = 787,004,585,982.51
  5. Step 5: Solve for x
    x = 787,004,585,982.51/812,992.06
  6. Step 6: Final answer
    x = 968,034.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.